package edu.sju.chenshu.common.core.utils;
import edu.sju.chenshu.common.core.constants.JwtConstants;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import java.util.HashMap;
import java.util.Map;

public class JwtUtils {
    /**
     * ⽣成令牌
     *
     * @param claims 数据
     * @param secret 密钥
     * @return 令牌
     */
    public static String createToken(Map<String, Object> claims, String secret)
    {
        String token =
                Jwts.builder().setClaims(claims).signWith(SignatureAlgorithm.HS512, secret).compact();
        return token;
    }
    /**
     * 从令牌中获取数据
     *
     * @param token 令牌
     * @param secret 密钥
     * @return 数据
     */
    public static Claims parseToken(String token, String secret) {
        return Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();
    }

    public static String getUserId(Claims claims) {
        Object value = claims.get(JwtConstants.LOGIN_USER_ID);
        if (value == null) {
            return "";
        }
        return value.toString();
    }

    public static void main(String[] args) {
//        Map<String,Object> payload = new HashMap<>();
//        payload.put("userId",123456789L);
//        System.out.println(createToken(payload, "ascasxzcas"));
        String token = "eyJhbGciOiJIUzUxMiJ9.eyJ1c2VySWQiOjEyMzQ1Njc4OX0.IXMdEY-o1icYBuWlKuaEdQzTDoQ-bW97Yym0YLOXzh6LeqZCyzdNwpucDNGUnR9pnnAbXP0sYaprKldXVb25zw";
        System.out.println(parseToken(token, "ascasxzcas"));
    }
}
